Operating instructions

5.2.5 VU Meter Lamp Replacement
The VU meter lamps are operated at less than their rated voltage and should
have a very long life. If a lamp does burn out, replacement lamps are
available from OTARI (Otari Part No. LU2070).
1. Turn off the power. Open the VU Meter Panel.
2. Locate the meter that needs a replacement lamp. Loosen the screw
indicated in Figure 5-4. Turn or remove the metal plate.
3. Remove the old meter lamp with tweezers. Insert a new meter lamp.
4. Reinstall the metal plate and secure with the screw removed in Step 2.
5.2.6 Head Shield Position Adjustment
Refer to Figure 5-5. The upper and lower sensor assembly positions can be
adjusted slightly after loosening the respective phillips head screws.
The lower sensor should be adjusted so that the top of the shield plate lowers
to approximately 1 mm above the head assembly base cover. The upper
sensor should be adjusted so the shield plate raises to approximately 3 mm
from the bottom lip of the head assembly cover plate.
SLOTTED HOLES
UPPER SENSOR
SHUTTER
LOWER SENSOR
SLOTTED HOLES
DRIVE MOTOR
PLATE SHOWN IN
MID POSITION
SHIELD PLATE
Figure 5-5
Head Shield Position Adjustment
Figure 5-4
VU Meter Lamp Replacement
REMOVE THIS SCREW
METER LAMP
METAL PLATE
Section 5 Maintenance
5 - 8
October 1990
MTR-90III Operation and Maintenance Manual